There is a free plan with daily ceilings — 15 tutor messages, 5 flashcard sets, 5 quizzes, 3 study guides, 3 mind maps and 3 uploads per day — and paid plans that lift them. Voice tutoring is on the paid plans only. We do not advertise it as unlimited.

Can Zelvi import my existing Quizlet sets?

No. Zelvi builds study material from documents you upload rather than from another product’s sets.

Which is better for exam revision?

It depends on where your exam comes from. If it is set from your lecturer’s material, building from that material is the stronger approach. If it is a widely taught standard syllabus, an existing set may get you revising sooner.

Comparisons

A shared library, or your own course material.

These are not the same product competing on features. One gives you what other students have already made; the other turns what your instructor published into practice.

Choose Zelvi if

Your revision has to come from a specific set of lecture slides, notes or PDFs.
You want an answer you can trace back to the page it came from.
You want to work a problem through with a tutor rather than only be tested on it.
Your institution needs the material an instructor publishes to be the material the tutor uses.

Choose Quizlet if

You want a set for a widely taught topic that somebody has already built.
You study primarily on a phone and want a native app.
You revise offline, on a commute or somewhere without a connection.
Your class already shares Quizlet sets and you want to work from the same ones.

Feature by feature

Zelvi compared with Quizlet, feature by feature
Feature	Zelvi	Quizlet
Where the material comes from	Your uploads, or what your instructor published	A large library of user-created sets, plus your own
Building a set from a document	Generated from PDFs, slides and notes	Import and manual creation; AI features on a paid tier
Pre-made sets for common topics	None — nothing is shared between accounts	Its largest advantage, by a wide margin
Tutor that explains a concept	Conversational tutor, typed or spoken	Not the product it is trying to be
Interactive STEM and anatomy visuals	Diagrams generated from parameters and manipulated by the learner	Cards and diagrams within a set
Native mobile app	None — mobile web only	iOS and Android
Offline revision	Not supported	Supported on a paid tier
Institutional deployment	Course enrolment, instructor publishing, cohort view, per-institution isolation	Teacher and school tiers oriented around sets and classes
Free plan	Daily ceilings: 15 tutor messages, 5 sets, 3 uploads; voice is paid only	Free tier with advertising; paid tier removes limits

Where Quizlet fits

Quizlet is built for fast self-study at scale: millions of ready-made sets, native apps that work offline, and a familiar routine for revising a standard syllabus. Zelvi is built for one course: every set comes from the instructor’s material and every miss is followed through.

What our side of this rests on

Answers cited back to your own material, with the instructor one tap away when the material does not cover itOn our go/no-go benchmark every answer retrieved the right passage, carried a valid citation and stayed inside the material, and every out-of-scope question routed the learner to the instructor rather than a guess — against 54.2% for handing the model the whole document.
Interactive STEM visuals — graphs, geometry, circuits, reactions — that the learner can manipulate54 STEM diagrams and 27 interactive ones ship today, and every one is re-drawn and checked before a release.
Talk to the tutor out loud, interrupt it, and be understoodThe realtime voice loop ships today and is exercised before every release.

Questions people actually ask

Is Zelvi free?: There is a free plan with daily ceilings — 15 tutor messages, 5 flashcard sets, 5 quizzes, 3 study guides, 3 mind maps and 3 uploads per day — and paid plans that lift them. Voice tutoring is on the paid plans only. We do not advertise it as unlimited.
Can Zelvi import my existing Quizlet sets?: No. Zelvi builds study material from documents you upload rather than from another product’s sets.
Which is better for exam revision?: It depends on where your exam comes from. If it is set from your lecturer’s material, building from that material is the stronger approach. If it is a widely taught standard syllabus, an existing set may get you revising sooner.